On Wed, May 06, 2009 at 01:19:24AM +0200, Daniel Mack wrote: > All high-level i2c functions to write block data, namely > i2c_smbus_write_block_data() and i2c_smbus_write_i2c_block_data(), put > the length of the data being sent inside the block sent on the wire. I > couldn't believe it myself, but even my hardware I2C analyzer clearly > shows that. The API seems to assume that communication to I2C devices > always wants data to be sent with a leading command, followed by the > number of data bytes attached and then the data itself. Correct me if > I'm wrong on that. That's not the I2C API, that's the SMBus API. SMBus is more restricted than I2C - it essentially defines a protocol on top of I2C. If the device doesn't implement SMBus then you should use the I2C API directly. _______________________________________________ Alsa-devel mailing list Alsa-devel@xxxxxxxxxxxxxxxx http://mailman.alsa-project.org/mailman/listinfo/alsa-devel
